JP4825653B2 - Folding container - Google Patents

Description

  The present invention has a bottom part forming a quadrilateral and four side walls connected to each side of the bottom part via hinges, and these four side walls are raised from the bottom part to engage each side end. Folding containers that can be assembled together in a box shape and can be folded with the side wall overlaid on the bottom, especially the state of engagement between the side walls becomes strong during assembly, while simple operation It is related with the folding container which can cancel | release the engagement state between each side wall, and can fold. This folding container is used as a container for storing and transporting various articles.

  Conventionally, for folding containers, for example, techniques disclosed in Patent Documents 1 and 2 have been proposed.

  Patent Document 1 discloses a side wall that is first raised from a folded state in a folding container that has a bottom part and four side walls that are connected to the bottom part via a hinge member and that can be folded so that the side wall overlaps the bottom part. In addition to forming a locking elastic piece that can be brought into contact with the side wall that is set up later, the pressing elastic piece is pressed against an outer wall surface of the side wall that is set up later so as to be released from the side wall that is set up later. A folding container provided with an unlocking member is disclosed.

Patent Document 2 discloses a side wall that is first raised from a folded state in a folding container that has a bottom part and four side walls that are connected to the bottom part via a hinge member and that can be folded so that the side wall overlaps the bottom part. And a locking elastic piece that can be contacted by a side wall that is stood from behind, and the left and right regions of the lock release member storage area that are formed on the outer wall surface of the side wall that is stood from the rear, respectively. An unlocking member comprising an unlocking main body that presses the elastic piece and an unlocking operation body having an operation part is disposed so that the operation part faces each other, and the operation parts of the unlocking member are brought close to each other By moving it in the direction, the one-touch operation is used to release the locked state between the side wall that stands first and the side wall that stands up later. Tenor has been disclosed.
JP 2002-240822 A JP 2003-165536 A

  However, in the above-described prior art, the locking mechanism that engages between adjacent side walls is weak against the twisting force, and when the twisting force is applied to the side walls, the locking mechanism is inadvertently released, and the side walls Could fall.

  The present invention has been made in view of the circumstances described above, and the engagement state between the side walls becomes strong at the time of assembly. On the other hand, the folding container that can be folded by releasing the engagement state between the side walls with a simple operation is provided. For the purpose of provision.

In order to achieve the above object, the present invention has a bottom part having a quadrilateral shape and four side walls connected to each side of the bottom part via hinges, and these four side walls are raised from the bottom part. In a folding container that can be assembled in a box shape by engaging the respective side ends, and can be folded so that the side ends overlap each other by releasing the engagement between the side ends,
A slide body having a constricted portion having a tapered slope in the vicinity of both ends of each of the two opposing first side walls among the side walls causes the both end portions to protrude from the side ends of the first side wall by a predetermined length. It is attached to be able to extend and contract between a joint release position and an engagement position where the both ends are retracted from the engagement release position,
The side ends of the two second side walls other than the two first side walls are in contact with or close to the front end of the slide body at the engagement position. A first lock portion to be engaged, and a second lock portion comprising a pair of clamping protrusions for clamping the constricted portion of the slide body at the engagement position,
The first lock portion and the second lock portion are configured such that when the slide body moves from the engagement position to the engagement release position, the clamping protrusion of the second lock portion is a tapered inclined surface of the constriction portion. The first lock portion is pressed against the protruding end of the slide body and is engaged with the side end of the first side wall. A folding container is provided that is configured to be released.

  In the folding container of the present invention, the slide body has a pair of two slide parts having a length substantially half the length of the first side wall connecting both side ends of the first side wall, and the slide parts are simultaneously extended and retracted. It is preferable to have an operation lever that is moved to the position.

  In the folding container of the present invention, a curved portion is formed at an end portion of the slide part opposite to the constricted portion, a locking portion is provided on the curved portion, and the two curved portions are arranged opposite to each other on the operation lever. It is preferable that the attached portion is pivotably attached and the engaging portion is engaged with the operation lever.

  In the folding container of the present invention, it is preferable that a biasing member that biases the slide component from the disengagement position toward the engagement position is provided on the first side wall.

Since the folding container of the present invention has a configuration in which the side edges of the first side wall and the second side wall forming the container corner portion are engaged with each other by the first lock portion and the second lock portion, It is possible to provide a folded container in which the engaged state becomes strong, particularly strong against torsion, and the side wall is not easily tilted even when a twisting force is applied to the side wall of the container.
In addition, the slide body provided on the first side wall can be expanded and contracted by a one-touch operation to release the engagement between the first lock part and the second lock part. It can be folded.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of a folding container of the present invention. The folding container 1 of the present embodiment includes a bottom portion 2 having a quadrilateral shape, and four side walls 4a to 4d connected to each side of the bottom portion 2 via a hinge portion 3, and the four side walls 4a to 4d 4d is raised from the bottom and can be assembled into a box shape by engaging the respective side ends, and the side ends are disengaged and folded so that the side walls 4a to 4d overlap the bottom 2. It is a possible structure.

  Of the four side walls 4a to 4d of the folding container 1, each of the two opposing first side walls 4a and 4b has a slide body 7 having a constricted portion 6 having tapered slopes 5 in the vicinity of both ends. It is attached to be able to extend and contract between an engagement release position in which both ends protrude from the side edges of the first side walls 4a, 4b by a predetermined length and an engagement position in which both ends are retracted from the engagement release position. ing.

  In addition, the side ends of the two second side walls 4c and 4d other than the two first side walls 4a and 4b are in a state where a part thereof is in contact with or close to the tip of the slide body 7 at the engagement position. A second lock comprising a first lock portion 8 that engages with the side ends of the first side walls 4a and 4b, and a pair of clamping protrusions 9a and 9b that clamp the constricted portion 6 of the slide body 7 at the engagement position. A lock unit 10 is provided.

  The first lock portion 8 and the second lock portion 10 are configured such that when the slide body moves from the engagement position to the disengagement position, the clamping protrusion of the second lock portion tapers the constriction portion. The first locking portion is pushed by the tip of the protruding slide body and is engaged with the side end of the first side wall. It is configured to cancel the connection.

  In the folding container 1 of the present embodiment, the slide body 7 includes a pair of two slide parts 11a and 11b having a length approximately half the length of the first side wall connecting both side ends of the first side walls 4a and 4b. The slide part 11a, 11b is composed of an operation lever 12 that simultaneously moves the slide parts 11a, 11b in the expansion / contraction direction.

  2A and 2B are diagrams illustrating an example of the operation lever 12, where FIG. 2A is a plan view of the operation lever 12, FIG. 2B is a front view, FIG. 2C is a bottom view, and FIG. 2D is a side view. These are AA sectional drawing in (a). The operation lever 12 of this example has an inverted q shape in which a rectangular operation portion protrudes from a base portion having a circular cup shape. On the inner surface side of the base portion, a locking projection piece 13 is formed so as to protrude from the center portion, and two locking pins 14 are formed to protrude so as to face the outer peripheral portion.

  FIG. 3 is a view showing one slide part 11a, (a) is a front view of the slide part 11a, and (b) is a plan view. In this example, the slide part 11a is formed of a thick plate, a curved portion 15 is formed at an end opposite to the constricted portion 6, and a locking hole 16 serving as a locking portion is provided in the curved portion 15. ing.

  FIG. 4 is a diagram illustrating a slide body 7 including a pair of slide parts 11a and 11b and the operation lever 12 shown in FIG. 2 as an example of the slide body used in the present invention. The pair of two slide parts 11a and 11b are arranged so that the curved portions 15 face each other toward the center of the side wall, and the constricted portions 6 face the side ends. The operation lever 12 is rotatably attached to a region where the two bending portions 115 are arranged to face each other, and the locking pin 14 of the operation lever 12 is fitted in the locking hole 16 of the bending portion 15.

  5A and 5B show a state in which the operation lever 12 is attached to the center of the side wall 4a, where FIG. 5A is a cross-sectional view showing a state before the operation lever 12 is attached, and FIG. . At the center of the first side wall 4a on the container outer surface side, a locking claw 17 for attaching the operation lever 12 is formed to project. The operating lever 12 is attached by press-fitting the locking projection 13 into the locking claw 17 of the first side wall 4a with the locking pin 14 fitted in the locking hole 16 of the slide parts 11a and 11b. In the attachment state shown in FIG. 5B, the base portion is attached so as to be rotatable about the locking claw 17 by moving the operation portion of the operation lever 12 up and down. Although not shown, the slide parts 11a and 11b are slidably attached along the side wall length direction by a plurality of support frames provided on the outer surface side of the first side wall 4a.

  FIG. 6 is a diagram for explaining the operation of the slide body 7 according to this example. As described above, the operation lever 12 is rotatably attached to the locking claw 17 of the side wall 4a in a state where the locking pin 14 is fitted in the locking holes 16 of the slide parts 11a and 11b. In this state, when the operation portion of the operation lever 12 is lowered, the base portion of the operation lever 12 rotates counterclockwise, and accordingly, the slide parts 11a and 11b protrude from the side edges of the first side wall 4a. Slide in the direction. The sliding range of the slide parts 11a and 11b includes an engagement release position in which the tip portion protrudes from the side end of the first side wall 4a by a predetermined length, and an engagement position in which the both end portions are retracted from the engagement release position. It is between.

  In the folding container 1 of the present invention, it is preferable that the first side walls 4a and 4b are provided with urging members that urge the slide parts 11a and 11b from the disengagement position toward the engagement position. As long as this urging member has the above-mentioned function, the kind and arrangement position thereof are not particularly limited, and a known spring or the like can be used.

  In addition, although the constituent material of the folding container 1 of this embodiment is not specifically limited, It is preferable to form all or the principal part of each component mentioned above with a synthetic resin. The synthetic resin is preferably a thermoplastic resin such as a polyethylene resin, a polypropylene resin, a polystyrene resin, a polyethylene terephthalate resin, a polyamide resin, an ABS resin, or an AS resin.

  7A and 7B are views showing the structure of the main part of the second side wall 4c, wherein FIG. 7A is a plan view of the side end of the second side wall 4c, and FIG. 7B is a side view. In the folding container 1 of the present embodiment, the side end of the second side wall 4c is engaged with the side end of the first side wall 4a in a state in which a part thereof is in contact with or close to the tip of the slide body 7 at the engagement position. There are provided a first lock portion 8 to be joined and a second lock portion 10 composed of a pair of sandwiching protrusions 9a and 9b for sandwiching the constricted portion 6 of the slide part 11a in the engaged position.

  In the example shown in FIG. 7A, the first lock portion 8 includes a plurality of second side wall-side engaging portions that extend in a substantially right angle direction from the side end of the second side wall 4c. On the other hand, at the side end of the first side wall 4a, a first side wall side engaging portion that engages with the second side wall side engaging portion is provided at a corresponding position. The engagement structure of the second side wall side engaging portion and the first side wall side engaging portion is such that the tip of the slide component 11a that is in contact with or close to the first lock portion 8 at the engaging position is engaged. It is only necessary to have a structure in which the engagement state is released when the first lock portion 8 is pressed after moving to the release position, and is appropriately selected from various engagement structures that have been conventionally known in the field. Can be adopted. For example, an engagement structure in which the second side wall side engaging portion is a concave portion or a convex portion, and the first side wall side engaging portion is a convex portion or a concave portion that can be fitted to the concave portion or the convex portion; Examples include an engagement structure in which the portion is a hole or a through hole, and the first side wall side engaging portion is a plurality of projecting pieces that can be fitted into the hole or the through hole.

  In the example shown in FIG. 7A, the second lock portion 10 is moved from the distal end portion of the first lock portion 8 at a position corresponding to the constricted portion 6 of the slide component 11a at the engagement position to the second side wall 4c. It consists of two clamping protrusions 9a and 9b protruding in the length direction. These sandwiching protrusions 9a and 9b are erected at a distance substantially equal to the width of the constricted portion 6 of the slide part 11a, and the tip of the tapered slope 5 of the slide part 11a slides between them. It is designed to be strong enough to be elastically deformed so that the part expands. Further, a protrusion 18 that engages with the constricted portion 6 of the slide part 11a is provided at the tip of these sandwiching protrusions 9a and 9b.

  8A and 8B are diagrams showing a schematic structure of the first side wall 4a, in which FIG. 8A is a front view, FIG. 8B is a plan view, FIG. 8C is a left side view, and FIG. At the side end of the first side wall 4a, there is provided a slide component support portion 19 provided with a tip portion of the slide component 11a. An insertion hole 21 into which the slide component 11a is inserted along the length direction is provided at a position corresponding to the engagement position of the first lock portion 8 and the second lock portion 10 on the first side wall 4a. Yes. Further, a notch 20 is provided in the region corresponding to the sandwiching protrusions 9a and 9b of the second lock part 10 for inserting these sandwiching protrusions 9a and 9b and engaging with the constricted part 6 of the slide component 11a. It has been.

  FIG. 9 is a diagram illustrating a state in which the side walls of the first side wall 4a and the second side wall 4c are aligned and the side walls are engaged with each other by the first lock portion 8 and the second lock portion 10, (A) is a top view of a container corner | angular part, (b) is a side view. In the engaged state shown in FIG. 9A, the slide part 11a is in the engaged position, and the tip thereof is in a position in contact with or close to a part of the first lock portion 8 of the second side wall 4c. Further, the sandwiching protrusions 9a and 9b of the second lock portion 10 sandwich the constricted portion 6 of the slide component 11a.

  In the engaged state shown in FIG. 9, the respective engaging portions provided at the side end portions of the first side wall 4 a and the second side wall 4 c are engaged with each other by the first lock portion 8. The engagement structure by the first lock portion 8 is the same as the engagement structure in a conventionally known folding container, and there is a possibility that the side wall falls down when a twisting force is applied to the side wall. The folding container 1 according to the present embodiment has the engagement structure by the first lock portion 8 and the engagement by the second lock portion 10, so that even when a twisting force is applied to the side walls, It is difficult to disengage.

  That is, the second lock portion 10 has two sandwiching protrusions 9a and 9b provided on the second sidewall 4c from the outer surface side of the first sidewall 4a inserted inside the first sidewall 4a, and these sandwiching protrusions 9a. , 9b has an engagement structure for sandwiching the constricted portion 6 of the slide part 11a. By adopting such an engagement structure, even when the side walls of the first side wall 4a and the second side wall 4c are engaged with each other, even when the side walls are twisted, the sandwiching protrusions 9a and 9b can slide the slide part 11a. By sandwiching the constricted portion 6, the torsional deformation of the side wall is suppressed. As a result, the container of this embodiment in the assembled state in which the four side walls are erected and the side ends are engaged with each other, even when a twisting force is applied to the side walls, the side walls are not easily engaged with each other. Therefore, it is possible to prevent a problem that the side wall comes off and falls down during the conveyance. Although only one side end of the first side wall 4a is shown in FIG. 9, the engagement by these lock portions is simultaneously performed on both sides of the first side wall 4a.

  FIG. 10 is a diagram for explaining a state in which the slide body 7 is operated and the engagement between the first lock portion 8 and the second lock portion 10 is released at once, and (a) shows the slide component 11a and each lock portion. Schematic which shows a motion of (b), (b) is a top view of a container corner | angular part, (c) is a side view. In the folding container 1 of the present embodiment, when the engagement of the first lock portion 8 and the second lock portion 10 is released and the side walls 4a to 4d are folded, as shown in FIG. The engagement of both side ends of the first side walls 4a and 4b can be released by a simple operation of depressing the operation portion of the attached operation lever 12. In FIG. 10, only one side end of the first side wall 4a is shown, but the engagement of these lock portions is simultaneously performed on both sides of the first side wall 4a.

  In the slide body 7, when the operation lever 12 is pushed down, the pair of slide parts 11a and 11b are simultaneously moved in the side end direction, and the tips of the slide parts 11a and 11b protrude from the side ends to the disengagement positions. To do. As shown in FIG. 10A, when the tip of the slide component 11a moves to the disengagement position, the tip of the slide component 11a presses the first lock portion 8 of the second side wall 4c, and the second lock portion 10 Between the two sandwiching protrusions 9a and 9b, a tapered inclined surface 5 whose width dimension gradually increases from the constricted portion 6 is press-fitted, and the sandwiching protrusions 9a and 9b are expanded, as shown in FIG. The engagement of the second lock part 10 is released.

  When the tip of the slide part 11a presses the first lock portion 8 of the second side wall 4c, the engagement by the first lock portion 8 is released as shown in FIG. 10B, and the side end of the first side wall 4a The side end of the second side wall 4c can be separated.

As described above, the folding container 1 according to the present embodiment has the first side walls 4a and 4b and the second side walls 4c and 4d that form the corners of the container with the first lock portion 8 and the second lock portion 10 at the side edges. Since it is configured to engage, the engagement state between the side walls becomes strong at the time of assembly, and particularly, the side walls 4a to 4d fall down even when a force in the twisting direction is applied to the container side wall. The difficult folding container 1 can be provided.
In addition, since the slide body 7 provided on the first side walls 4a and 4b can be expanded and contracted by a one-touch operation to disengage the first lock portion 8 and the second lock portion 10, the engagement between the side walls can be performed with a simple operation. The combined state can be released and folded.

  FIG. 11 is a diagram illustrating an example of the hinge portion 3 that connects each side of the bottom portion 2 and the four side walls 4a to 4d in the folding container 1 of the present embodiment, and (a) is a lower end of the side walls 4a to 4d. The front view which shows the hinge convex part 22 provided in FIG. 2, (b) is a side view of the part, (c) is the front view which shows the hinge hole 23 by the side of the bottom part 2, (d) is BB sectional drawing of the part. (E) is a front view of the hinge part 3 which attached the hinge convex part 22 to the hinge hole 23, (f) is a side view of the part, (g) is a side view which shows the motion of the hinge part 3. FIG. As shown in FIGS. 11A and 11B, the hinge portion 3 according to the present example is provided with one or more hinge convex portions 22 made of a pair of projecting pieces at the lower ends of the side walls 4 a to 4 d, and each side of the bottom portion 2. Are provided with one or more hinge holes 23 into which the hinge protrusions 22 are rotatably fitted at positions corresponding to the hinge protrusions 22, and the hinges of the side walls 4 a to 4 d are provided in the respective hinge holes 23. It has a structure in which the convex portion 22 is fitted.

  FIG. 12 is a diagram illustrating a folded state of the folding container 1 of the present embodiment. In this example, among the side walls 4a to 4d in which the engagement between the first lock portion 8 and the second lock portion 10 is released, the first side walls 4a and 4b are folded and overlapped on the bottom portion 2, and then the second side walls 4c, It has a folding structure that overlaps 4d.

  The above-described embodiment is merely an example of the present invention, and the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications or changes are possible.

It is a perspective view which shows one Embodiment of the folding container of this invention. An example of the operation lever used for the folding container of the same embodiment is shown, (a) is a plan view of the operation lever 12, (b) is a front view, (c) is a bottom view, (d) is a side view, (e ) Is an AA sectional view in (a). An example of the slide component used for the folding container of the same embodiment is shown, (a) is a front view, (b) is a plan view. It is a front view which shows an example of the slide body used for the folding container of the same embodiment. The state which attached the operation lever to the center of a side wall is shown, (a) is sectional drawing which shows the state before operation lever attachment, (b) is sectional drawing which shows an operation lever attachment state. It is a front view explaining operation | movement of the slide body by this example. The structure of the principal part of the 2nd side wall in the folding container of the same embodiment is shown, (a) is a top view of the side edge part of a 2nd side wall, (b) is a side view. The structure of the principal part of the 1st side wall in the folding container of the same embodiment is shown, (a) is a front view, (b) is a top view, (c) is a left side view, (d) is a right side view. The corner | angular part of the folding container of the same embodiment is shown, (a) is a top view, (b) is a side view. It is a figure explaining the state which act | operates a slide body in the folding container of the same embodiment, and cancels | releases engagement with a 1st lock part and a 2nd lock part at once, (a) is a slide component and each lock part. Schematic showing the movement, (b) is a plan view of the container corner, (c) is a side view. An example of the hinge part used for the folding container of the same embodiment is shown, (a) is a front view which shows the hinge convex part provided in the lower end of a side wall, (b) is a side view of the part, (c) is a bottom part side The front view which shows the hinge hole of this, (d) is BB sectional drawing of the part, (e) is a front view of the hinge part which attached the hinge convex part to the hinge hole, (f) is a side view of the part, (G) is a side view which shows the motion of a hinge part. It is a side view which shows the state which folded the folding container of the same embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Folding container, 2 ... Bottom part, 3 ... Hinge part, 4a, 4b ... 1st side wall, 4c, 4d ... 2nd side wall, 5 ... Tapered slope, 6 ... Constriction part, 7 ... Slide body, 8 ... 1st Lock part, 9a, 9b ... clamping protrusion, 10 ... second lock part, 11a, 11b ... slide part, 12 ... operation lever, 13 ... locking protrusion, 14 ... locking pin, 15 ... bending part, 16 ... Locking hole (locking part), 17 ... locking claw, 18 ... projection, 19 ... slide part support part, 20 ... notch, 21 ... insertion hole, 22 ... hinge convex part, 23 ... hinge hole.

Claims (4)

A box having a bottom part forming a quadrilateral and four side walls connected to each side of the bottom part via a hinge part. These four side walls are raised from the bottom part and engaged with the respective side edges. In a folding container that can be assembled in a shape and can be folded so that the side ends are disengaged and the side wall is overlaid on the bottom,
A slide body having a constricted portion having a tapered slope in the vicinity of both ends of each of the two opposing first side walls among the side walls causes the both end portions to protrude from the side ends of the first side wall by a predetermined length. It is attached to be able to extend and contract between a joint release position and an engagement position where the both ends are retracted from the engagement release position,
The side ends of the two second side walls other than the two first side walls are in contact with or close to the front end of the slide body at the engagement position. A first lock portion to be engaged, and a second lock portion comprising a pair of clamping protrusions for clamping the constricted portion of the slide body at the engagement position,
The first lock portion and the second lock portion are configured such that when the slide body moves from the engagement position to the engagement release position, the clamping protrusion of the second lock portion is a tapered inclined surface of the constriction portion. The first lock portion is pressed against the protruding end of the slide body and is engaged with the side end of the first side wall. A folding container characterized in that it is configured to be released.   The slide body includes a pair of two slide parts having a length approximately half the length of the first side wall connecting both side ends of the first side wall, and an operation lever for simultaneously moving these slide parts in the expansion / contraction direction. The folding container according to claim 1, further comprising a folding container.   A curved portion is formed at the end of the slide component opposite to the constricted portion, a locking portion is provided on the curved portion, and the operation lever can be rotated to a region where the two curved portions are arranged to face each other. The folding container according to claim 2, wherein the container is attached to the operation lever and the engaging portion is engaged with the operation lever.   4. The folding container according to claim 2, wherein a biasing member that biases the slide component from the disengagement position toward the engagement position is provided on the first side wall. 5.

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